In a 3-phase synchronous motor, the negative phase sequence exists when the motor is Options: A . &nbspsupplied with unbalanced voltage B . &nbspunder-loaded C . &nbspover-loaded D . &nbspnone of the above

In a 3-phase synchronous motor, the negative phase sequence exists when the moto

Question

In a 3-phase synchronous motor, the negative phase sequence exists when the motor is

Options:

A . supplied with unbalanced voltage

B . under-loaded

C . over-loaded

D . none of the above

Answer: Option A

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Question 1. As the load is applied to a synchronous motor, the motor takes more armature current because....

Question 2. An important advantage of a synchronous motor over wound round induction motor is that....

Question 3. The power factor of a synchronous motor is better than that of induction motor because....

Question 4. In case one phase of a three-phase synchronous motor is short-circuited the motor will....

Question 5. An over excited synchronous motor is used for....

Question 6. Riunting in a synchronous motor takes place....

Question 7. The rotor copper losses, in a synchronous motor, are met by....

Question 8. The size of a synchronous motor decreases with the increase in....

Question 9. For power factor correction, synchronous motors operate at....

Question 10. The back emf in the stator of a synchronous motor depends on ....

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